PSYCO258 Lecture Notes - Lecture 30: Ebbinghaus Illusion, Systems Theory, Situation Two
4 Apr 2016
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Acions and movements: acion is organized, intenional movements to achieve a goal, acions can be discrete or coninuous, acions can be dynamic or ixed, dynamic = adjust with changing environment, ex. Adjust to where a ball is if catching: fixed = no dynamic adjustment, cup to mouth, walking (these are coninuous also) Feedback systems: open loop (no change with feedback, motor control instrucions efectors, ex. Throwing darts, once it leaves your hand you cant change its spot: ex. Df equivalence: diferent end points (goals) achieved equivalently, can end up at the same point by various degrees of acions, generate same goal (end up in same spot by diferent acions, ie. df) Spontaneous tradeofs between df: sifness, comfort, energy, ex. If shoulder is sore, youll mostly use your arm instead of shoulder, you spontaneously compensate for sifness and comfort: minimize energy expended in performing acions (which difer for individuals, no computaionally eicient soluion. Properies of acions: movement kinemaics, coordinaion, fit"s law.
